Scraper



C. L. LAWTON.

SCRAPER. APPLICATION FILED MAR. 8,. 1921.

Patented my 23, 1922.

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2 SHEETS-SHEET 2.

ATTORNEY.

uurrsn STATES rarsur orr cs.

CHARLES L. LAW'ION, 0F HANCOCK, MICHIGAN.

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T 0 all whom it may concern:

,Be it known that I, CHARLns L. LAWTON, a citizen of the United States, and residing atI-Iancock, in the county of Houghton and State of Michigan, have invented a new and Improved Scraper, of which the following is a specification.

This invention relates to the Construction of scrapers especially adapted for use in mines for moving ores and other heavy materials and its objectis to provide a scraper with an adjustable back plate so that it can be adapted for work on level ground and on inclines of various angles.

This invention consists of a frame comprising side bars having circular extensions and a load receiver comprising a cylindrical back plate or apron and circular end bars attached to the apron and adapted to be attached to the circular extensions of the frame.

I It further consists in circular extensions and end bars as set forth, each provided with evenly spaced holes so that the apron may be attached to the frame at various positions so as to accommodate the scraper to the different inclinations of the surfaces to be scraped.

It also consists in the details of construction illustrated in the accompanying drawings and particularly pointed out in the claims.

In the drawings, Fig. 1 is a plan and Fig. 2 a side elevation of this improved scraper. Fig. 3 is a side elevation of the rear end of this scraper with the apron shifted relative to the frame. Fig. l is a rear elevation of the scraper. Fig. 5 is a section on the line 5-5 of Fig. 1. Fig. 6 is a section on the line 6-6 of Fig. 5. Fig. 7 is a section on the line 7-7 of Fig. 1.

Similar reference characters refer to like parts throughout the several views.

The scraper shown in the drawings has Side bars 1, preferably of I-beam section bent toward each other and joined at their front ends by a plate 2 which is adapted to receive the pin 3 on which the clevis 4: may be mounted. Secured to the rear ends of the side bars are connector bars 5 whose rear portions beyond the side bars are circular to the same central line and all parallel to each other. These bars are formed with evenly spaced holes 6 to receive the bolts 7.

The ore carrier portion of the scraper consists of a cylindrical apron 8 secured to the the place where it is to be used.

Specification of Letters Extent. Patented May 23 1922.

Application filed March 8, 1921.

Serial No. 450,783.

inner flanges of two end bars 9 by means of the rivets 10 indicated in F igpQ, which bars are preferably of the same dimensions as the bars 9 of the frame. These bars are each slidable between a pair of connector bars 5 and are also provided with holes of the same spacing and arrangement as the connector bars to receive the bolts 7. It will therefore be seen that the apron may be] shifted to any desired position relative to the frame bars and that its lower edge may be at varying angles to the ground.

As the lower edge of the apron is subject to the most wear, a separate lip 12 may be employed which lip may be attached to the body of the apron by means of a splice piece 13, rivets 14 being employed.

In order to hold the scraper down against the ground a weight 16 may be attached to the apron, and an eye 17 attached to this weight may be used to drag the scraper to In Fig. 2, the side bars 1 are shown bent at 18, but this bend may be at any other desired point forward of the connector bars, or the bend may be entirely omitted.

The proportions and details of the several parts of this device may all be changed by those skilled in the art without departing from the spirit of my invention as set forth in the following claims.

I claim:

1. In a scraper, the combination of two side bars connected at their front ends and connector bars attached to their rear ends, the portions of the connector bars extending beyond the rear ends of the side bars being circular, and a substantially cylindrical apron adjustably attached to the connector bars and embodying circular flanges adapted to fit against said circular rear ends, said flanges and side bars having registering holes, and bolts adapted to secure the flanges on the apron to the side bars in a plurality of positions.

2. In a scraper, the combination of a frame, connector bars attached to the rear end thereof, an apron formed to fit said connector bars at a series of different positions, and means to rigidly secure the apron to the connector bars in any one of said different positions, each of which differs from the others in relation to said frame.

3. In a scraper, the combination of a frame comprising side bars inclined toward each other at their front ends, means connecting their front ends, said frame having circular extensions at its rear end, a cylindrical apron slidably mounted on said extensions and means to rigidly secure the apron to said circular extensions in a plurality of positions.

4. In a scraper, the combination of a frame comprising side bars inclined toward each other at their front ends, means connecting their front ends, said frame having circular extensions at its rear end, a cylindrical apron slidably mounted on said extensions, said apron comprising a cylindrical body and circular bars attached to its ends and adapted to fit the circular extensions on the frame, and a Weight attached to said cylin drical body,

5. In a scraper, the combination of a frame embodying pairs of circular extensions parallel to each other and similarly curved, cirpairs of. extensions, acylindrical apron extending between and attached to the side bars, and a Weight mounted on the apron;

6. In ascraper, the combination of a frame embodying I-beams inclined toward each other at their front ends, connector bars attached in pairs to the rear ends of the I- beams, circular end bars in the form of I- beams slidably mounted between the pairs of connector bars, means to attach thecircular end bars to the connector bars at a series of different locations, a cylindrical apron extending between and attached to said end bars, and a Weight attached to the rear surface of the apron, the lower edge of the apron being separable therefrom.

CHARLES L. LAWTON. 

